Water soluble sulphur quantum dots for selective Ag<sup>+</sup> sensing based on the ion aggregation-induced photoluminescence enhancement

Chen, Dejian; Li, Shunxing; Zheng, Fang

doi:10.1039/c5ay02451j

Cited by 28 publications

(19 citation statements)

References 45 publications

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“…Sulfur quantum dots. Sulfur quantum dots are pure elemental quantum dots, mainly including S central nanodots and surface functional groups [ 81 , 82 ].…”

Section: Sulfur-containing Quantum Dotsmentioning

confidence: 99%

“…Generally, sulfur quantum dots were synthesized by hydrothermal methods based on “top-down” synthetic approaches. Literature has reported detailed synthetic approaches including phase interfacial reaction [ 81 , 83 ], “assemble-fission” approach [ 82 , 85 ], H 2 O 2 -assisted “top-down” approach [ 86 ] and oxygen accelerated scalable approach [ 84 ]. Synthetic details for each approach are described as follows:…”

Section: Sulfur-containing Quantum Dotsmentioning

confidence: 99%

“…Their stable photoelectric properties made sulfur-containing quantum dots be adapted as excellent probes in biosensors via various strategies, such as electrochemical, PEC, PL and ECL strategy [ 113 , 114 , 115 ]. Soluble sulfur-containing quantum dots can react with biomolecules, thus biosensors for detection biomolecules could be established through specific physiochemical reactions between them [ 81 , 116 , 117 ]. Functionalization of sulfur-containing quantum dots (especially, sulfide quantum dots) with different stabilizing agents to form surface groups can enhance their hydrophilicity and interaction ability with other biomolecules [ 115 , 118 , 119 , 120 ].…”

Section: Sulfur-containing Quantum Dotsmentioning

confidence: 99%

“…As emerging quantum dots, sulfur quantum dots have been paid much attention due to their possessions of inexpensive S atoms and unique physicochemical properties [ 82 , 83 , 84 ]. Literature has demonstrated that sulfur quantum dots were applied in the field of sensor [ 81 , 85 , 124 ]. For example, sulfur quantum dots have been used for sensing metal ions or detecting drug [ 81 , 125 ].…”

Section: Sulfur-containing Quantum Dotsmentioning

confidence: 99%

“…Literature has demonstrated that sulfur quantum dots were applied in the field of sensor [ 81 , 85 , 124 ]. For example, sulfur quantum dots have been used for sensing metal ions or detecting drug [ 81 , 125 ]. Very recently, sulfur quantum dots also have gradually been applied to living cells imaging [ 124 ].…”

Section: Sulfur-containing Quantum Dotsmentioning

confidence: 99%

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Biosensors Based on Advanced Sulfur-Containing Nanomaterials

Wang

Jiang

et al. 2020

Sensors

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In recent years, sulfur-containing nanomaterials and their derivatives/composites have attracted much attention because of their important role in the field of biosensor, biolabeling, drug delivery and diagnostic imaging technology, which inspires us to compile this review. To focus on the relationships between advanced biomaterials and biosensors, this review describes the applications of various types of sulfur-containing nanomaterials in biosensors. We bring two types of sulfur-containing nanomaterials including metallic sulfide nanomaterials and sulfur-containing quantum dots, to discuss and summarize the possibility and application as biosensors based on the sulfur-containing nanomaterials. Finally, future perspective and challenges of biosensors based on sulfur-containing nanomaterials are briefly rendered.

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“…Sulfur quantum dots. Sulfur quantum dots are pure elemental quantum dots, mainly including S central nanodots and surface functional groups [ 81 , 82 ].…”

Section: Sulfur-containing Quantum Dotsmentioning

confidence: 99%

Section: Sulfur-containing Quantum Dotsmentioning

confidence: 99%

Section: Sulfur-containing Quantum Dotsmentioning

confidence: 99%

Section: Sulfur-containing Quantum Dotsmentioning

confidence: 99%

Section: Sulfur-containing Quantum Dotsmentioning

confidence: 99%

See 3 more Smart Citations

Biosensors Based on Advanced Sulfur-Containing Nanomaterials

Wang

Jiang

et al. 2020

Sensors

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Sulfur quantum dots as a novel platform to design a sensitive chemiluminescence probe and its application for Pb²⁺ detection

2022

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The monitoring of Pb as a hazardous heavy metal element for the environment and human health is of high importance. In this study, a simple and sensitive chemiluminescence (CL) probe based on sulfur quantum dots (SQDs) was designed for the determination of Pb 2+ . To the best of our knowledge, this is the first report on the analytical application of the CL method based on SQDs. For this purpose, SQDs were synthesized using a simple hydrothermal method and characterized using transmission electron microscopy, Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy and X-ray diffraction. Then, the direct CL of SQDs elicited by common oxidants was investigated. The highest CL intensity was observed for the SQDs-KMnO 4 reaction, and its CL mechanism was studied. We indicated that the CL intensity of introduced system can be diminished as a result of the interaction between Pb 2+ and SQDs, and exploited this fact for designing a CL-based probe for the determination of Pb 2+ . The CL intensity of the SQDs-KMnO 4 reaction was linearly quenched using Pb 2+ in the range 50-2000 nM with a limit of detection of 16 nM (S/N = 3). The probe was used for the determination of Pb 2+ in different water samples and the recovery results (95.2-102.8%) indicated the good analytical performance of the developed method.

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A Novel Selective “Turn‐On” Fluorescent Chemosensor Based on Thiophene Appended Cyclotriphosphazene Schiff Base for Detection of Ag⁺ Ions

Tümay

2021

ChemistrySelect

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The salicylaldehyde-functionalized cyclotriphosphazene (1) and thiophene appended cyclotriphosphazene based Schiff base (2) were designed and synthesized. The characterizations were carried out via MALDI-TOF, FTIR, 13 C, 31 P and 1 H NMR. The photophysical behavior of compound 2 was evaluated by UV-Vis absorption, time-resolved fluorescence, excitation-emission matrix (EEM) analysis, steady-state fluorescence, and 3Dfluorescence spectroscopies. Compound 2 demonstrated selective fluorescence "turn-on" response at 427 nm towards to Ag + ion when the tested competitive species did not affect fluorescence signal. The binding and sensing mechanisms were evaluated by DFT calculations which approved that the PET process between C=N and fluorophore groups was inhibited, and the fluorescence "turn-on" response was obtained with the contribution of CHEF after 1 : 1 coordination of compound 2 with Ag + ion. The LOD and LOQ were calculated as 3.15 and 9.45 μmol L À 1 , respectively in the linear range of 9.35-210.00 μmol L À 1 Ag + ions. The practical application of compound 2 for Ag + determination was successfully performed in environmental waters after optimization of measurement conditions. The obtained results approved that compound 2 is a selective fluorescent sensor for Ag + ions and it can be used for spectrofluorimetric Ag + determination in real samples. Importantly, according to the literature, this report is the first example of cyclotriphosphazene based fluorescent sensor for Ag + ion.

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Water soluble sulphur quantum dots for selective Ag⁺ sensing based on the ion aggregation-induced photoluminescence enhancement

Abstract: Water soluble sulphur quantum dots have been presented for silver ion detection based on the ion aggregation-induced photoluminescence enhancement.

Cited by 28 publications

References 45 publications

Biosensors Based on Advanced Sulfur-Containing Nanomaterials

Biosensors Based on Advanced Sulfur-Containing Nanomaterials

Sulfur quantum dots as a novel platform to design a sensitive chemiluminescence probe and its application for Pb²⁺ detection

A Novel Selective “Turn‐On” Fluorescent Chemosensor Based on Thiophene Appended Cyclotriphosphazene Schiff Base for Detection of Ag⁺ Ions

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Water soluble sulphur quantum dots for selective Ag+ sensing based on the ion aggregation-induced photoluminescence enhancement

Abstract: Water soluble sulphur quantum dots have been presented for silver ion detection based on the ion aggregation-induced photoluminescence enhancement.

Cited by 28 publications

References 45 publications

Biosensors Based on Advanced Sulfur-Containing Nanomaterials

Biosensors Based on Advanced Sulfur-Containing Nanomaterials

Sulfur quantum dots as a novel platform to design a sensitive chemiluminescence probe and its application for Pb2+ detection

A Novel Selective “Turn‐On” Fluorescent Chemosensor Based on Thiophene Appended Cyclotriphosphazene Schiff Base for Detection of Ag+ Ions

Contact Info

Product

Resources

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Water soluble sulphur quantum dots for selective Ag⁺ sensing based on the ion aggregation-induced photoluminescence enhancement

Sulfur quantum dots as a novel platform to design a sensitive chemiluminescence probe and its application for Pb²⁺ detection

A Novel Selective “Turn‐On” Fluorescent Chemosensor Based on Thiophene Appended Cyclotriphosphazene Schiff Base for Detection of Ag⁺ Ions